Saad Qureshi

Unfortunately, I don't have Granta MDS, I filled in a request to ANSYS for Granta and they gave me a temporary license to Granta Selector. Unfortunately, Selector only had linear elastic properties for Natural Rubber & Butyl Rubber, no hyperelastic test data or Constitutive Model Parameters. 

If you could provide me Hyperelastic Model Parameters or Test Data on this post, that would help.